"All of the fans provided (including the fan in the Silent Savior) are made of clear plastic with the propeller being molded out of a navy blue resin. The blue is not UV reactive, but is attractive in it's own right. All wires are sleeved with a black casing that, according to the faint printing on it, should be able to withstand 125 degrees Celsius.. you REALLY need to buy more fans if the inside of your computer is that hot."